I see your point, but comparing this with an off-line AV scanner with a regularly updated internal database (assuming that's what you meant) is not an apt comparison.
The analog would be an AV scanner that sends a list of your files/hashes to a centralised server somewhere, so that the company can target ads related to your file contents (or sell your data...), in addition to warning you about viruses.
Agreed that % true positive is not a factor in whether or not to have a given security feature. But it is merely convenient that the vast majority of the usage of this "link protection" feature would benefit Google/MS and not the customer/user (assuming that Google/MS are data mining, which is yet unproven in this use case).
The analog would be an AV scanner that sends a list of your files/hashes to a centralised server somewhere, so that the company can target ads related to your file contents (or sell your data...), in addition to warning you about viruses.
Agreed that % true positive is not a factor in whether or not to have a given security feature. But it is merely convenient that the vast majority of the usage of this "link protection" feature would benefit Google/MS and not the customer/user (assuming that Google/MS are data mining, which is yet unproven in this use case).